[c-nsp] 6500 fabric switching mode ??

Jeffrey G. Fitzwater jfitz at princeton.edu
Wed Nov 2 16:30:06 EDT 2011


Thanks for all the great info.

I'am done with this issue.


Jeff
On Nov 2, 2011, at 15:59 , Mack McBride wrote:

> It forces the chassis to truncated mode which can reduce the performance of the chassis.
> But that only applies in high packet rates.
> It also opens the chassis to bus stalls if the blade has to be replaced.
> 
> LR Mack McBride
> Network Architect
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jeffrey G. Fitzwater
> Sent: Monday, October 31, 2011 1:00 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] 6500 fabric switching mode ??
> 
> Will the switching processor or routing processor on a sup720-3B incur more CPU load if its switching mode is BUS vs dCEF?
> 
> It looks like it would be best for me to upgrade mod 3 to something that supports a fabric connection.
> 
> 
> If I run "show fabric switching-mode" on 6513 I get the following...
> 
> 
> Note the sup runs in BUS mode because of the non-fabric module in slot 3....
> 
> 
> ----------------------------------------------------------------------
> 
> Global switching mode is Truncated
> dCEF mode is not enforced for system to operate
> Fabric module is not  required for system to operate
> Modules are allowed to operate in bus mode
> Truncated mode is allowed
> 
> Module Slot     Switching Mode
>   1                 Crossbar
>   2                 Crossbar
>   3                      Bus
>   4                 Crossbar
>   5                 Crossbar
>   6                 Crossbar
>   7                      Bus
>   9                     dCEF
>   10                    dCEF
>   11                Crossbar
>   12                    dCEF
>   13                Crossbar
> 
> ----------------------------------------------------------------------
> 
> 
> Any comments please...
> 
> 
> 
> Jeff Fitzwater
> OIT Network Systems
> Princeton University
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